garland



v mflvioel.) i Sheetssheen 1.

'G. YL. GARLAND 8E' J. 82 S. E. MURRAY. ENTRIPUGAL AMALGAMATOR AND SEPARATOR'.

l :4 shecs--sheet 2.; .8a S.'E. MURRAY,

' (No Moden.)

C; L. GARLAND & J Y (ENTRIFUGAL AMALGAMATOR AND SEPARATOR. No. 604,978.

Patented May 31,1898;

jizz/entame; l

arhlarland l Jcln) Murr@ l' f'o *all whomV it may concern: l Be it known that we, CHARLES LAUNcELo'r GARLAND, mine-owner, residing 'at Sydney, and JOHN MURRAY, .mine-owner, and SAMP- Cowra Creek, in the British Colony of New Southales, subjects of the Queen of Great A Britain, have invented newfand useful Improvements in Centrifugal Amalgamators 'fand ASeparatore forlFinelyDivided Auriferus and'Argentiferous Materials, of which 1 the following is a specification; v

. Heretofore attempts have been made to utilzeceptrifugal force inthe amalgamation of I he'gold and silver contained in finely-divided frnaterials-such as pulverized ores,l tailings, y and the like. These attempts -haveup to the lresent not been successful, as in most of barges orit was proposed torely upon forces andlconditionswhich'are not present in prac- JCB; I p x Now this invention relates to improvements u n centrifugal amalgamators and separators 2'51 forinely-divided auriferous and argentifer- 'Tous materials in which the operation is con- VWtinuous, the finely-divided material being fed finto the machine and the waste discharged therefrom continuously. In thismachine by gdreason of centrifugal force the auriferous and largentiferousr and other inet-allie particles which are it for amalgamation are caught "ufpon surfaces of amalgamated plate or plates, ',(copper or silver or the like plate covered with 1rnercury and at the same time the unclean 'particles are caught or vwithdrawn from the "material under treatment as it passes from f feed to discharge.

j' These improvements in centrifugal amal- 4" ganhators=` and separators for iinely-divided auriferousA and argentiferous materials consi'stfirst, in the combination and arrangement, in and with a revolving pan or bowl or a revolving base or saucer, of one or more ap- "prfoXima'tely (though not precisely) vertical circular peripheries or wal-ls or skins of amalgamating-plate along which the material under treatment is compelled to travel in intimate contact therewith. 5c `."''=l`hese improvements in centrifugal amalgamators and separators for finely-divided ,UNITED` STATES 't-JPATENT Ormes.

. "soN EDWARD MURRAY, carpenter, residing at'l hem it was proposed to treat the materialinv HAR'LES DAUNoELoT AerARLAND, 0F fsY-DNEY, AnD JOHN MURRAY lAND sAMPsoN EDWARD MURRAY, or cowRA CREEK; Nnwgsoprrr WALES,v

j cE'NTRlFUeAL AMALeAM'A-rn anta s'pEPARA-ron.

SPEGIFIGATION forming partiof Letterslfatent No. 604,978, dated May 31', 1898.

' Appnanon inea my a, 1897. sentir. 643,901.- onmoaei.)

auriferous `and argentiferous materials'consist, secondly, in the combination and arrangement, in and witha revolving tpan or bowler a revolving base or saucer, of circular catch-grooves or traps of peculiar construe tion at the endof revolving amalgamatingsurfaces or of two or more such circular catchgroove surfaces at the end of and between revolvingamalgamating-surfaees. These catch- 6o grooves o'r traps are circular and preferably of the shape in section of half of the letter S- that is,liaring but Vhaving au inward overhang-though they may be of other shape so longas they are divided into two parts with a comparatively narrow connection; and these improvements in centrifugal amalgamators vand separators for finely-divided au- .riferous and argentiferous materials consist, further, in the particular combinations and 7o arrangements of mechanical partshereinafter described andispecically claimed.

One construction of improved centrifugal amalgamator andseparator for finely-divided auri'ferous and argentiferous materials made 75 according to these improvements consists of a revolving bowl or pan, into which is a central bottom-dischargey feed-pipe. This bowl or pan has an approximately (though not precisely) vertical internal periphery' of amal 8c gamating-platc and at the head of said plate a catch-groove or trap of the construction hereinafter mentioned. In addition to these mentioned parts there may be an inner cylinderor cone lined with amalgamating-plate reaching nearly to the bottom of the revolving bowl or pan, and there may also be above the first catch-groove or trap a second amalgamating internal circular surface and this superposed by a second catch-groove or trap. 9o There would be of course in any case an annular launder to catch the discharge from the top of the bowl or pan, a feed-hopper for a central hollow vspindle of the'bowl or pan, a supporting-spindle in a foot step-bearing, and a pulley or other device for revolving the bowl'or pan. I

A modified construction of improved centrif u gal amalgam'ator and separator for tinelydivided auriferous and argentlferous mate-1oc rals made according to these improvements consists of a revolving base or saucer, which supports a series of approximately (though not precisely) vertical circular peripheries or walls of amalgamatiiig-plate so arranged that the material under treatment will travel over or along them all to a catch-groove or trap of the construction hereinbefore mentioned. In this construction also there would be a eentral hollow shaft for the feed and a supporting-bearing, and there would further be approved devices for imparting the revolving motion and a circular stationary launder to receive the discharge; but in order that this invention may be clearly understood reference will now be made to the drawings herewith, in which- Figure lisa central section of an improved centrifugal amalgamator and separator for finely-divided auriforous and argentiferous materials constructed according tothis invention; and Fig. 2, a partial plan of the same, showing various horizontal partial sections. Fig. 3 is a central section of a modified construction of catch-groove or trap, showing also a draw-oli' eontrivance. Fig. t is a central section of a modification of the improved amalgainator and separator, and Fig. 5 is a partly sectional plan view of the same.

In the construction shown in Figs. 'l and L a vertical spindle J in an appropriate frame l( and on a foot step-bearing L supports the bowl or pan A. rl`his bowl A has linings .1) and F of amalgamatilig-plate and catchgrooves or traps .E and G. Centrally of the pan A is fixed therein a hollow shaft or column A2, into the top of which lits the feedhopper aud in the bottom ot which are discharge slots or orifices A', leading into the basin or pan. Around the top of the pan and conveniently supported is the receiver-or eireular launder 1l, from which is an offset Il' to waste. The catch-grooves or traps ll and G are of the configuration shown or approximating thereto and are divided by plates E and G', respectively. (Such plates may forni part of the disk, as shown in Fig. l, or may be a ring, as shown in 13 and 'lhe dividing-plates leave narrow spaces or passages lt and G2, respectively, between. the upperand lower parts of the grooves or traps.

It and G are splash-rings covering the lower portion of the grooves or traps. When the divisional plates ll and G forni part of disks, they are supported by ring-pieces FH and (il, respectively, having screws a nd nuts It and (in thereon. The ring-piece El in addition supports the part c, which has the form ot' a truncated hollow cone and which holds in place the amalgamatingorcopper plate l.

ll" is a bent pipe leading from the catchgroove or trapdownwardly (havi ng a screwed adjustable mouth FP) and leading into a stationary launder or trough F.

ln operation the finely-dividml auriferous, argentifemns, or other metal-bearing material which is to be amalgamated and to have separated therefrom the heavy particles is fed with water into the hopper, passing down column or shaft A2 and through the slots A' into the pan A, which is revolved at a considerable rate of speed. 'lhe centrifugal `nnpulse thus imparted causes the material to be thrown forcibly against the amalgamating-surface l, where some of the precious metal is retained, the other parts of the material passing under the end of the cone C and being impelled by the centrifugal force against theamalgamati11g-surface l), passing upward. 'lhe whole of the residue of the precious metal, which is in a fit state for amalgz'unaticn, is retained bythe amalgamating-plate D, while the unclean gold and sitvcr and other metals which may have; not amalgamated and other metals of high sptci fic gravity pass into the catch-groove or trap it, in which there would accumulate in some instances a fair quantity of mercury retained therein by the centrifugal force. '.l`he heavier particles, finding their way behind the bulk of mercury, arc retained in the concavity, while the lighter particles, flowing over the lnercury, find their way upward ont of said trap, though being further influenced by surface Fand second trap Gwhen these are present. The plate or disli'll directs the centrifugally-impelled material against the aggregated mercury in the trap E and also insures that the gathering of material in said trap shall be dispersed, so far as the lighter parts are concerned, bythe water flowing upwardly and outwardly around it and then inwardly. The amalgamatcd plate F and the second trap G may not be necessary, but are proposed as a further precaution to preventloss, though it is anticipated that every thing worth saving will be saved by the loweiI amalgamated plates l; and I) andthe catch-groove or trap lil.

In the modified construction shown in Figs. `t and 5 the spindle supports the base or saucer a and the cone (L or a first wall or internal periphery' having lining it' of amalgamated plate. 'l`he base o. supports, by brackets or angle-pieces ufl and L",.the walls or internal .peripheries j', having amalgamatedplate linings f, which leave openings (topand bottom) /`fj j"j',thelatterof which opens to the trap lt under the ring-plate it. The hollowshaft or column of leads the finelydivided material fed therein, preferably with water, to the discharge-orifices a, through which it passes, and ctnning within the range of the centrifugal force created by the rapid revolving of the base or saucer a and its attachments it is kept closely onto the amalgamating-linings(t'fflf5 f7 as itpa-ssc's, owing to their slight inclinations from one to the other, throughopcnings lI/'/"f". From the last amalgamatilig-plate f7 it passes through opening j into the trap It. 'l'he precious metals are retained by the amalgamated plates or linings, and the valuable residue, asl

before described, is retained in the trap,while the waste is discharged from trap ll into eircular launder il.

llaving now particularlydescribed and ex.-

IOC

IIO

IIS

ISEO

.plained the nature of our said invention and in what manner the saine is to be perforrned,

Y, We declare lthat what we claim isnamalgamating-plate upon-theinner.fame-*cfgY 1. 1n an amalgamator the'combination with abowl mountedfgon a central, hollow shaft having a feed`hopi,einptying in'to' its upper end, vthe lower portenxof said shaft have` ing slots for the passage tjth'e material, of 'a part mounted on said hollow shaft and hav-V ing the shape pf a truncatedhollow cone, an

said part, and one' or more'circular plates, or

."5" disks, mountedon saidjhollow shaft. above .the cone-shaped part, andA having their edges projecting into a corresponding number of" catch-grooves, or traps, formed ofthe wall of thebowl which y'projects outward beyond the normal-diameter of as described,-

the latter, substantially 2. In anamalgamator tl 'combination with a hollow shaft-,havin g slots nearitsflower end andv a feed-hopper@ fommunicating with its upper end, -of a bowl qunted on and rotating-with the shaft, a part mounted on said shaft and having the form of `a hollow trun cated cone, the closed ,truncated end lying abovethe slots in the hollow shaft, an amalv gamated l'plate upon the inner face of said` 3 rlpart, the lower edgefof the latter being above the bottom of the'bowl, and a disk, or, crcu f lar plate, vmounted on Said shaftad projecting at itedgewintoit .catch;gooye, or trapjexe.-.

tending beyond the outer surface'of the bowl and entirely around the same, substantially as described.

3. In an amalgamator,thecombination with a vertical hollow shaft-having slots at its lower end and afeed-hppper at the upper end, of a bowlmounted on said'shaft below the slotted end,l a part having the form of a hollow truncated cone having its truncated closed end mounted on the lshaft above the slots in the lower-Eend, anamalgamating-plate on the inner face of said part, the lowerJ open end of the. latter being above the bottom of the bowl oneorjniore disks or circular plates on said shaft labovethe said truncated end, Athe outer edge or edges 'thereof lyingin one or more circular i catch grooves or traps in said bowl which project outward, a splash-ring mounted little distance from the inner face of the bowl and a circular launder, or't'rough surround.

ing and partly inclosing the upper edge of the bowl, and the upper catchgroove,substan' tially as described.

Dated this 8th day of June, 1897.V

CHARLES LAUNoELor GARLAND.

JOHN MURRAY. t

,y l SAMPSON EDWARD MURRAY. I ',Witnessesz I 'FRED WALSH,

ELRLNEWELL.

on the lower face of each of said disks at a 

